Brian I first admit that I failed when I was in your position but that does mean that I have had the chance to analyse what went wrong. In my case without criticising the org, just by stopping going to the meetings and saying that I didn't believe it anymore was enough for my wife to brand me as a devil.
In retrospect I can see that the effect on my wife was taken to be an attack on her sense of security. It undermined her status as wife and mother and at the same time it challenged her emotional dependance on her Watchtower delusion and the social circle within the congregation.
To suddenly stop being a JW is a shocking and powerful event for the believing spouse. In my case my wife went in the direction of becoming a super zealous JW blindly ignoring all other considerations. This had serious repercussions on the whole family and especially on my young children.
In other words; don't do what I did! I suggest you remember that your wife wants security and consideration and not have the rug pulled from under her feet. So the advice already given to take it very slowly is a must.
I guess that your wife needs the experience of being given a new vision of an honest and good life without dependence on flimsy promises of paradise before she is exposed to the faults of the JW mind-set. Criticism of the religion only arouses entrenchment.
As you loosen the ties with JWdom you can increase your time with your wife and family instead.
All the best to you as you embark on your new direction in life, remember we are with you and do keep posting!